基于改进限幅法的变换域通信峰均比抑制算法  

Peak to average power ratio suppression algorithm in transform domain communication based on the improved amplitude limiting

作　　者：尚影 时鹏飞 SHANG Ying;SHI Pengfei(Department of Science and Health,Fuyang Preschool Education College,Fuyang Anhui 236015,China;The 14th Research Institute of China Electronics Technology Group Corporation,Nanjing Jiangsu 210013,China)

机构地区：[1]阜阳幼儿师范高等专科学校科学与健康系,安徽阜阳236015 [2]中国电子科技集团公司第十四研究所,江苏南京210013

出　　处：《阜阳师范学院学报（自然科学版）》2018年第3期54-57,共4页Journal of Fuyang Normal University(Natural Science)

基　　金：国家自然科学基金项目(11626121)资助

摘　　要：变换域通信存在高峰均比,严重降低了发射端的功率放大器的效率及信号的传输距离。针对传统基于时域限幅算法导致的TDC造成的非线性失真问题,本文提出了无失真的限幅调制方法。该方法通过多次限幅调制和变换域频谱幅度矩阵相乘的方式,产生低峰均比的波形并在接收端采用该波形进行匹配接收,进而在降低峰均比的同时不产生信噪比损失。The transform domain communication(TDC)owns high peak to average power ratio(PAPR),which reduces the efficiency of the front-end power amplifier,yielding limited communication transmission distance.To deal with the nonlinear distortion caused by the time domain limiting algorithm,anundistorted algorithmis proposed in this paper.The method generates low PAPR waveform by multiplying multiple amplitude limiting modulation and frequency spectrum amplitude matrix.At the receiver,the corresponding waveform is used,which reduces the PAPR without extra signal to noise ratio loss.

关 键 词：变换域通信 峰均比 限幅法 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]